text: const mws = require('..');
  const keys = require('../test/keys.json');
  
  mws.init(keys);
  
  async function main() {
      const results = await mws.getProductCategoriesForASINs({
          marketplaceId: 'ATVPDKIKX0DER',
          asins: [
              'B00IDD9TU8',
              'B00IH00CN0',
          ],
      });
      console.warn(JSON.stringify(results, null, 4));
  }
  
  main();
  